#box2{
    height: 360px;
    background-image: url(http://www.yiliao.com/course_bg.jpg);
}
#light:hover{
    color: darkgoldenrod;
}
#box3 img{
    position: relative;
    right: -470px;
    top: 20px;
    width: 130px;
    height: 130px;
    border-radius: 65px;
}
table{
    padding: 5px;
    width: 1000px;
    font-size: 17px;
    line-height: 30px;
    border: 0px solid wheat;
    padding: 5px;
    margin: 0px 200px;
}
#cbd tr{
    margin: 0px 400px;
    font-size: 14px;
}